Telescopic pipe-joint.



A. L. COLE.

TELESGOPIG PIPE JOINT.

APPLICATION FILED 0GT.14, 1909.

1,008,033. Patented Sept. 12,1911.-

UNITED STATES PATENT OFFICE.

ALBERT L. cote, or AUBURNDALE, massnonusn'rrs, nssrenon, nvmnsnn ASSIGN- MENTS, TO BLOSS & WALES, INCORPORATED, or BOSTON, MAssAcHUsnTTsn eon- PORATION OF NEW YORK.

TELESCOPIC PIPE-JOINT.-

Specification of Letters Patent. Patented Sept. 12, 1911.

Application filed October 14, 1909. Serial No. 522,621.

To all whom it may concern:

Be it known that I, ALBERT L. COLE, a

citizen of the United States, residing at Auburndale. in the county of Middlesex and State of'Massaehusetts, have invented a new and useful Improvement in Telescopic Pipe-Joints, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to telescopic pipejoints.

The objects of the invention are to provide a joint which permits variation in the length and rotary movement of the parts connected; which is so constructed that it does not require frequent repacking to keep it steam and water-tight and which is provided with flexible means for maintaining the movable member in an, outward position.

The following is a description of the invention, reference bein made to. the accompanying drawings, in which Figure 1 is a side elevation of the preferred form of the invention; Fig.2 is a Vertical longitudinal sectional view of the same; Fig. 3 is an elevation of the closed end; Fig. 4 is a vertical transverse sectional view on line 44 in Fig. 2; and Fig. 5 is an end view looking toward the movable member. 7

In the drawin illustrating the preferred embodiment of t e invention 1 represents a socket-member having an interior cylindrical chamber 2 closed at one end by a cap 3 provided with a thread 4 adapted to screw into the threaded end of the socket-member 1. A suitable annular gasket 5 interposed.

situated on the side of the socket-member 1 as shown in the drawings, or onthe end in place of the cap 3.- The other end of the socket-member 1 is provided with a circular opening of less diameter than the diameter of the chamber 2 thereby forming an inthe open end of the said socket-member.

The threaded end of the pipe-section 10 may be either male or female'as occasion demands. As shown in Fig. 2 of the draw- 1ng s,.- the shoulder 12 fits closely within the cylindrical chamber 2 and the pipe-section likewise makes a close fit with the flange 7. The section 10 is free to be rotated or moved endwise within the cylindrical chamber of the socket-member. To secureatight oint between the socket-member and the pipe-section packing-rings 15 are arranged between the two adjacent to the shoulder 12 and a helical spring 16 within the chamber 2 having one end abutting the cap 3 and the other abutting the packing 15 serves the double purpose of keeping the packing tight against the shoulder 12 and the pipe-section 10 in a forward position with the shoulder 12 against the flange 7. If desired, in cases where there is little weight on the pipesection and little rotary movement thereof, packing-rings may be used between the shoulder 12 and the flange 7 in addition to or even in substitution of the packing shown in the drawings. Such use, however; is impracticable where the pipe-section is subjected to any degree of rotary movement since that movement, especially if the pipesection supports any weight, grinds away the packing in a very short time and requires such frequent repacking as to be of little practical value.

w The inner end of the pipe-sectionlO has four angular cuts 17 arranged on the inner surface to receive a square-headed tool to prevent rotary movement of the same when a pipe is being screwed onto the threaded end 11 or to turn the same to make the connectionif it is impossible or diflicult to turn the pipe to be so connected.

In the use of the joint, one of the pipes to be connected is screwed into the connection 6 or if that pipe is fixed the joint may be turned to make the connection. The cap 3 is removed and a square-headed 'tool is inserted in the angular cuts 17 on the inner end of the pipe-section 10 and the latter may then be connected to the other pipe either by turning the pipe-section or the pipe. If the latter method is used the square-headed tool is employed to 'hold the p1pe-section'10 stationary while the connection is being made. When the joint is inplace,

properly connected the cap 3 is readjusted It is to be observed that this construction permits a veryffree rotary movement of the pipe-section and its connections as well as an endwise or horizontal movement of considerable extent and any sudden movement of the pipe 'sect-ion is taken up by the helical spring and thereby prevents the joint being in ured} Another advantage of this construction is that it .is unnecessary when installing new packing to cut' the rings. In

. s ipped. over the inner end 0 the operation of repacking the ca 3 is removed from the socket member, t e helical s ring withdrawn and the packing} rings the -p1pe-section 10; the spring and cap are readjusted and the packing operation is completed.

What I claim is .1. Ina telescopic pipe joint, the combination with a chambered socket-member having an inner annular flange at its open end,

, of a pi e section rotatably' mounted and longitu all movable therein, a packing rifng mounte on the inner. end of said pipesectionbetween it and said socket-member, and comp'ressible means abutting said dpaek-. ing ringto maintaina tight joint an said pipe-section in a forward 'position.

2. In a telescopic pipe-joint, th e'combination ofa chambered socket-member. having." aninner'annular flange at its open end, a

pipe section rotatably mounted and longitu dinally movable therein, (a packing ring on the inner end of said pipe section and a spring within said socket-member bearing againstsaid packing ring tion' ota'socket-member havmg' an inner annular flange atits open end, a pipe-section rotatably mounted and longitudinally movable thereinand provided midway with an annularr'shoulder, a. packing'ri'ng mounted the inner end of said pi section and a helicall springwithin sai socket member abutting said packingring.

I 43111 a. telescopic pipej joint," the combination" of a socket-member having an inner annular flange at'itsopen' end; a pipe section rotatablvmounted and longitud nally movablej therein and provided midway with-a shoulder, a packing ring mountedonthe inner end of said pipe-section between said pipe-section and said socket-member and shutting said shoulder and flexible means abutting: said packing ring to maintain the same at all times against. the said-shoulder and to keep said pipe-section ina forward position, j I I ;v

5, In a telescopic pipe-joint,the' combination of a socket-member having an inner a'nnu'lar flange at its open end, a pipe-section .rotatably mounted and longitudinally movable therein and provided with an intermeinterior of said socket-member, a

' socket-member, 3. In a telescopic p1peo1nt, the combinaits open 'end, a' v mounted therein an of said socket-member and having one end projecting through the said opening in said socket-member, a packing ring mounted on the inner end of said pipe-section abuttin said intermediate shoulder and a helica spring abutting said packing'ring to maintain it in position.

7. In a telescopic pipe-joint, the combination of a cylindrical socket-member havin one end provided with an interior threa and'the other end with an interior shoulder, a threaded cap closing the threaded end of said socket-member, a pipe-section rotatably mounted and longitudinally movable within said socket-member with one end "projecting through the open end thereof'and having an intermediate annular shoulder fittingthe pac ing ring mounted on the inner end of said pipesection abutting said annular shoulder and a helical; spring abutting at one end said cap and at the other end said acking ring. 8. In a pipe-joint, the comliination of a a pipe-section rotatably mounted and longitudinally movable there-- in and projecting through the open end thereof, said pipe-section being provided with an intermediate annular shoulder fitting the interior of said socket-member and said socket-member having an interior shoulder at its open end to prevent the withdrawal of said pipe-section, a packing ring mounted on the ,inner end of said pipesectiori between it andthe socket-member and abutting said intermediate shoulder, a cap threaded into the other end of said socket member to 'close the "same and a spring abutting said cap and said packing to maintai'n the'latte'r in close contact with said intermediate shoulder and to normally maintain said pipe section in a forward position.

. 9. In a ipe-joint, the combination of a socket-mem r having an inner shoulder at pe-section rotatably capable of longitudinal movement, said pipe-section having an intermediate annula'rshoulder fitting the interior of said socket-member and normally abutting said inner shoulder on said socketmember, a" packing ring mounted on the inner end of said pipe-section between the latter and the socket member, a ca screwthreaded into the other end of sai socket; member to close the same and a helical spring abuttin said packing and said cap to maintain said packlng against the intermediate shoulder of said pipe-section and to normally maintain said pipe section in'a forward position.

10. In a pipe joint, the combination of a socket member having an inner annular flange at.its open end, a pipe-section rotatably mounted and longitudinally movable therein with one end projecting through said open end of said socket-member, and having an intermediate annular shoulder fitting the interior of said socket member and normall abutting said inner annular flange on said socket member, packing on the inner end of said pipe section and flexible means to maintain said packing against the intermediate shoulder of said pipe section ,and to normally maintain said pipe section in a forward position.

11. In a pipe joint, the combination of a chambered socket member having an inwardly extending'flange at one end, a pipe section longitudinally movable therein through sai flanged end, packing at the inner end of said pipe section, and a spring within the socket member bearing against E. F. UNIAC, F. J. V. DA-KIN. 

